Q. Electronic configuration of germanium is 2, 8, 18 and 4. To make it extrinsic semiconductor small quantity of antimony is added
A) The material obtained will be $N$-type germanium in which electrons and holes are equal in number
B) The material obtained will be $P$-type germanium
C) The material obtained will be $N$-type germanium which has more electrons than holes at room temperature
D) The material obtained will be $N$-type germanium which has less electrons than holes at room temperature
Explanation
(c) Artimony is a fifth group impurity and is therefore a donor of electrons
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.